Mechanism for synchronizing the operations of moving parts.



H. ABGCKISCH. MECHAMSM FOR SYNCHRONIZING THE UPERAHONSVOF Mpvm PARTS.

i APPLICATION FILED APR. 20. l9l6. RENEWED DEC. 20. 1911 1,279,640.

e mSQ Ha BUEKE'SH. y MECHANISM FOB'SYNCHRONIZING THE GMERAHONS 0F MOVINGPARTS. APPLICATIGN FILS-I0 APR. 20. 1916. RENEWED DEC. Z0, i917.1,279,640. 9am-.ed Sepa @4,1m

2 SHEETS-SHEET 2.

xmvrrnn STATES ,PATENT OFFICE.

HEINRICH BOCKISCH, OF POUGHKEEPSIE, NEW YORK, ASSIGNOR T M. WELTE &SONS,

OF NEW YORK, N. Y., A CORPORATION OF NEW YORK. i

MECHANISM FOR ISYNCI-l2RONIZING THE OYERATIONS OF MOVING PARTS.

Specification of Letters Patent. Patented Sept. 24, 1918.4

Application led April 20, 1916, Serial No. 92,389. Renewed December 20,H7. Serial No. 208,150.

\ To all whom it may concern `Be it known that I, HerNRICH BocKIsoH, asubject of the Em eror of yAustria-Hungary, residing at oughkeepsie,` in'the county of Dutchess and State of New York, have invented certain newand useful Improveniente in Mechanism for Synchronizing the Operationsof Moving Parts, of which the following is a specification.

This invention has relation to mechanism for synchronizing the.operations of moving parts. As the invention may be very desirablyapplied to the synchronizing of the operations of a plurality ofautomatlc instru-A ments whicht'respectively reproduce different partsof\A a musical composition for eX- ample, I have Selected thisparticular application of the invention for illustration herein, andparticularly have illustrated the p referred embodiment of the inventionwhen it is to be employed as a means for synchronizing the operations of'a Aphonograph-which for the purposeof the present invention is regardedas a species of musical instrument, although its use is not restrictedto the reproduction of musical composition--and a '.pneumaticallyoperable instrument of the stylewhichjutilizes a traveling perforatednote sheetv as the primary 'selectingelement or record, player pianos,automatic organs,

and orchestrions, forming well known ex-l amples of suchpneumatically-operable in-' struments. In such case, the phonograph Vmayreproduce a solo part of a musical "comgraphs with other musicalinstruments, howevery important this particular application maybebecause I recognize the fact that the invention mayvby suitablemodification be applied to many different classes of machinery orapparatus, the said modification having reference principally to thesubstltution for the herein illustrated primary controlling elements,which are peculiarly appropriate to a phonograph and self-playing piano,organs or orchestrions, of other primary controlling elements moreespecially adapted for the particular class or style of machines,apparatuses, or instruments which 'are to be synchronized.

In the accompanying drawings, wherein A like characters of referencedenote corre` spending parts in the several views:

Figure 1 is a schematic sectional representation of a preferred'embodiment of my invention, illustrating, also, certain elements of aphonograph and a Self-playing musical instrument to show its preferredapplication thereto.

F ig \2 is a wiring dia-gram of the electrical circuits, showing thepositions assumed by the apparatus when speed of the motor is beingaccelerated, z'. e., when contact has been made at A but before theaperture in B is in registration with the special duct.

Fig. 3 is a similar wiring diagram showing thel conditions applyingafter the aperture in B has come into registration with the specialduct.

Fig. 4: is a wiring diagram similar to Figs. 2 and 3 but showing theconditions applying when the speed of the wind motor is being`decreased, z'. e., when the aperture in B is in registration with lthespecial duct before-the Contact is made at A.

In Figs. 2, 3 and 4 the 'circuits 4through vhich current is flowing areshown in heavy mes.

Fig. 5 is a detail view illustrating one end of a record and trackerboard showing special apertures in the record and special duct in thetracker board.v

A and' B designate two movable or traveling parts whose movements are tobe synchronized by the present mechanism. In this particular applicationof the invention the part A is the table ofv a phonograph of ianyapproved. or suitable kind and the part B isa perforated note sheet suchas is commonly emp oyed as the record for playing or controlling theplaying of player pianos, piano players, automatic organs, orchestrionsand certain other musical instruments. It is well known that in practicethe table A is rotated at a regulated speed by a suitable motor, andhence it is not necessary to illustrate or further refer herein to themechanism fordriving said table.- lt 1s also understood that the notesheet or record B is perforated and in-itstravel over the tracker boardopens and closes ductsV formed in the latter, these ducts respectivelycommunicating with certain pneumatics of a player action Whose nature issuch that it controls the operation of the sound-emitting elements ofthe instrument either by acting directly on appropriate elements of apiano action, as is usual in player pianoshpr upon the keys of thepiano, as is usual in cabinet piano players, or pipes or othersound-emitting elements,

' as is common in organs or orchestrions, for l example. lt is apparentthat any means of a movable nature which is adapted to open and closethe several ducts of the tracker hoard l), when the latter is employed,in a. predetermined succession, may be utilized in lieu oi' theperforated note-sheet B, and hence l Would have it 'understood that theterm record Wherever herein used is intended 'to comprehend any suchdevice or means. The record B herein shown is wound onto a take-up rollc While playing the instrument and this takeeup roll derives motion froma Wind motor, illustrated conventionally at C. As it is common in1nstrument-s of this class to connect' such motors e with the take-uproll 0 for the -purpose stated, and as a-particular connection of themotor 4with such roll is 1n no Wise a part of my present invention, I donot consider it essential to describe any particular connection.

Moving with the table A and .selector or record B, respectivelyq arewhat are h er'ein termed primary controlling elements,ftliese primarycontrolling elements controlling the operation of the synchronizingmechanism, which synchronizing mechanism comprises a system ol"pneumatics and electrounagnets, or the like, so correlated as to producevarious effects ih the operation of theinstrument which eliects combineto bring about the correction oi the speed of one instrument when iltraiclii p faste; or slower than the einer. and to do this so promptlyand with inty that there is no noticeable 'i ichronization in theoperations of truments or machines: it being that the record li and thephonograph record-assuming that the instru nicnts'to be synchroniaed area phono 4ph anda seit-playing pi"I fo or the lilte-or other rccowlshicli are utilized, have heen properly7 d with reference to each otherin thc or'by opening air passagesto reeds,

i l tance and that the ellccts which .are

ire those due To friction and which influence the instrumentsdifferently and make it advisable to force one instrument `tofollowevery luctuation in speed of the other.

Thepresent invention aims to secure a practically perfectsynchronization of the instruments and further to do this by mechanisniof verysimple nature, which mechanism includes a system ofpneuinatically operated valves and means for automatically controllingthe same from the primary controlling elements respectively. In thisexempliication of the invention', the various valves of thesynchronizing mechanism are actuated by or under control of air atatmospheric and less than atmospheric pressures, t'. e., air lat normalpressure and air at subnormal pressure. The present day practice inautomatic musical instruments being4 in favor of the utilization of airat sub-normal and normal pressures, rather than. normal and above normalpressures, 'I have illustrated, and prefer, such arrangement herein`Without, however, intending to restrict the invention thereto.

The primary controlling element ass0- ciated with the table A, hereinexemplified` 1l in the tracker board b. Thisspecial duct la'- isconnected with a chamber 15 which isA separated from a suction conduit16 by a membrane 17. This membrane 17 is connected toa valve 18 Which ismounted in a chamber 19 having atV one side an atmosphcric port 20 andat the other sidea port 21 which opens into the conduit 16. The chamber19 also has a duct 22 which extends to a pneumatic 23 provided with aprojection 2l. The ports 20 and 2l are so arranged with relation to the'valve that the latter iu-one position closes the port'l and opens theport 20 and in the other positioncloses the port 2O and opens the port21. .The closing of the port 20 and opening` of thefport 2l occurs eachtime a synchronizing aperture 13 comesl into registration with thespecial duct 1l, and at this time the pneumatic Q3 is under suction fromthe conduit 16 and is collapsed. T he opening ot' the port 20 and theclosing of the port '2l occurs each time the duct 1l is closed1 and atthis time air at atmospheric pressure is admitted to the pntnmatic 23and the latter'is expanded. Th' z collapsing of the pneumatic 23 closesan electrical conduit Vas hereinafter set forth. p

The wind motor C derives motion from a conduit with which it is suitablyconnected. This conduit contains air at su'bnormal or situationalLpressure, 'and the A ressure of this air is regulated automatica] y by n'the synchronizing mechanism under control of the primary controllingelements hereinbeiore referred to. It may here be` stated that vtheconduit 16 is .supplied withl strong unregulated suction While thesuction in conduit 25 isa relatively Weak regulatedfsuction. f f t fWhen the motor is traveling too slowly i the conduit25 is placed undergreater suction through a` duct 26 which extends to acharnber 27 havinga port 28 leading to a suction conduit, the suction conduit in thisexempliication being the conduit 16 hereinbefore,

referred to.` The chamber 27 Contains a valve29 whose stem 29* isconnected to a membrane 80 which separates the conduit 16 from a chamber31 having a duct 32 through which it may be opened to the atmosphere.V@tiiviouslqy the opening of the chamber 31 to the atmosphere Will.cause the valve 29 to :.ir-l move and place the duct .26 incommunication with the conduit 16, which will el'ect a furattenuation cithe air in the conduit 25. The duct 26 may be provided with means forreguiating theopenin'g therethrough. This means may desirably compriseanadjustable threaded member 83 extending through a oclr 64 into theduct26 and adjustable to rest, ct the aperture through the latter; The u2'? should vbe permanently closed and at the same time to provide properguidance for the valve stem, 29a, I prefer to extend said stem throughav guiding member 35,-the opening through which is covered by a iexibieAair-tight apron 35 .of approximately inverted cup shape, Whose edge issecured in an air-tight manner to said member, the apron being 'alsoconnected, at its enter in an air-tight manner' to axnut 29c which.moves with Athe stem 29tt and being adapted to move with the' stemWithout discharging its function of preventing leakage around the stem.i A spring4 36 may beprovided to assure the quick return of the valve 29toits seat 'over the port 28 when the duct' 32 has been ciosed.

When the Wind motor/istraveling too fast it stowed dovvn by reducing thesuctional force in 'the conduit 25. This is accompiished, in the hereinexemplified form of the invention, by opening the-conduit 25 totheatmosphere through a port l37, chamber 38 and port 39. This port isprovided with anadj'ustable threaded member 33L to restrict the openingthrough said port. It vvill be. seen that the provision'of the inembersand 33 renders it unnecessary to acvcuratelyfadjust the throw of thevalves 2.9 and 46 because the forces eiiective when said valves areactuated may be efficiently regu y the port.

ns't 4the atmosphere 'and for this reason, y

lated by said members 33 and 33a. The port 37 is closed by a valve 40which is carried by a membrane 41. Thismembrane 41 divides the chamber38 from a second chamber 42, and a spring 43 in the second chamber isarranged to hold the valve 40 normally over The second chamber 42, has aduct 44 extending thereto from a chamber 45. This chamber 45 4isprovided with an atmospheric port 46 and arsuction port 47 and in it ismounted a valve 48 which opensI these ports alternately. When theatmospheric port 46 is open, air at atmospheric pressure is admitted tothe chamber 42 through the chamber 45 and duct v44, and this, togethervwith the spring '43, holds the val-ve 40 tightly to its seat over theportf37. When the port 47 is open,`air atsub-normal pressure is admittedto the chamber 45 and thence to the chamber 42, whereuponk the membrane41 Will be moved to carry the valve 40 away from the port I37, thusopen. ing the conduit 25 to the atmosphere through the port 37, chamber38"and port 39.

In this 'exemplification 'of the invention valve 48 has its stem 48aconnected to a membrane 49 which separates the suction conduit 16,hereinbefore referredto, from a.

Thus the valve18 which controls the collapse and eigpansion, of thepneumatic 23, the" valve 29 which controls the further attenuahaving asuctional conduit (16) common to all the valve chambers.,

-'but not essential to the invention. he sev- This .is esirable eralchambers 15, 50 and 31 in the herein exemplified form of the mechanismare connected With the suctionl conduit 16 by .bleed holes marked 15a,50a and 31, respctively.

D, E, F, G, H, and I designate suitable electric motors by which theopening and closing of certain ducts are controlled from the primarycontrolling elements. In this' -i exempiiication of the inventionv thesemotors are electro-magnets Whose armatures are marked d', c, f, '9,)hand ,`respectively,

said armatures servin as valves for the ducts hereinafter parti ularlyreferred to.

The armatures h and are arranged in operative relationvvith the ducts 32"and 51, respectively. Hence-When the magnet H is. energized, theduct'32 will be opened admitting air to the chamber 81, whereupon thelvalve 29 Will be moved from the position shown .in Fig. -1 and thesuction conduit 25 will be opened to the suction conduit. 16and afurther attenuation of the air in the conduit 25 will be brought about.Similarly, when the magnet I is energized the/armature i Will beattracted and the chamber 50 Will of which duct the foregoing operationsrwere effected, it follows that the energizing of the magnet E does notchange the condition, but said magnetis able to continue said conditionsuntil it is denergized, -or in other words, after the magnet l) has beendeenergized. v p y It will further be seen that when the magnet G isenergized at a time when the other magnets are all denergized, chamber54 is opened to the atmosphere lthrough branch duct 53, duct 56 and,duct 55, and that the opening of this chamber to the atmosphere causesthe valve 66 of box J to move and open chamber 63 to the suction conduit61. This places chamber' v7 3 of box L under suction and as bellows 93is at this time in communication with said chamber 73 the bellows willbe collapsed. Chamber 860i box M being also in communication withchamber 63 of box J will be placed under suction and this will act tomove the valves 87 and 88 and cut o'ff communication of port 83 withchamber 82 and open communication of said port with chamber 84. Bellows95 is now in communication. with the atmosphere through chamber 84, port83 and duct 96 and hence remains expanded. 1f, now, while the magnet Gis still energized, the magnet F becomes energized it will find thebellows 93 collapsed and thebellows .expanded and will not change thiscondition, because its branch duct 52 hascommunication with the chamber54 through duct 55 and this duct55 forms a part of the communicationbetween duct 53 and chamber 54. The duct 52, how ever, being connectedto the chamber 54 will result in the chamber 54 remaining open to theatmosphere after duct 56 and branch duct-53 have been closed, that is tosay, after magnet E has become denergized and until said magnet F isdenergized.

It may be here mentioned that wheirthe several valves are in thepositions shown in Fig. 1 both bellows are expanded, the bolloWs 93being in communication with the atmosphere through duct 94, port 74,chamber 73, branch duct v91, that'part of duct 91 lwhich is between thebranch duct 91x1 and the chamber' 73, chamber 63 and the port 65:whilethe bellows 95 is in communication with the atmosphere through dllct 96, port 83, chamber 82, that part of duct- 92 which is betweenchamber 82 and branch duct 92, -sa'id branch duct 92, chamber 69 andport 71.

'The movable boardl of the bellows 93 carries a contact bridging element97 and the vmovable board o f the bellows 95 carries a c'ontact'bridgingelement 98,. these elements being of such nature that they may formparts of electrical circuits preferably formed bythe connection'now tobe explained.

N designates a. suitablesource vof electrical energy of 10W., "oltage.yFrom thev positivey terminal of this source a wire 100 extends andterminates in the contact 11. From the complementary contact 12a wire101 extends to-,a terminal 102 common to the magnets D and F. From theotherl terminal 103 ot the magnet D a wire 104 extends to a contact 105.rIhis contact 105 is separated from a second contact 106,= and these twocontacts are adapted to be bridged by the bridging element 97 of thebellows 93 whenthe bellows is expanded. From the contact 106 a wire 107extends to a terminal 108 carried by a bus bar 109 having anotherterminal 110. From the terminal 110 a wire 111 extends back to thenegative terminal of the source N. From the positive terminal of thesource N a wire 112 extends to a terminal 113 on a bus bar 114, saidbusbar having a second terminal 115, from which a wire 116 extends to acontact element 117, which is adjacent to a second contact element 118,from which a wire 11'9 extends to a terminal 120, common to the magnetsE and G.

From the other terminal 121 of the magnet E a wire 122 extends to aterminal 123 having a contact element. 124 which is separated fromcomplementary contact elements 125, 1243L and by spaces adapted to bebridged by the contact bridging element 98 on the movable board of thebellows 95 when the said bellows is collapsed. The terminal.' 126 of thecontact element 125 is connected by a lninal being connected by a wire134 with a terminal 135 of the magnet I. A bus bar 136 has a terminal137 to which theJ other side of the magnet I is connected, the bus baralso having a terminal 138 to which one sideI of the magnet H isconnected. The bus bar 136 is also connected to the bus bar 114 by awire 139 which extends from a terminal 140 on the bar 114 to a terminal141 on the bar 136. The contact 130 of the bellows extends from` aterminal 142 which is coni-' nected by a wire 143 with the terminal108`` of the bus bar 109. f

Associated with the bellows l95 are. two other contacts 144'and 145,which are bridged v lions by the contact bridging element 98 Whenthe Ibellows 95 is expanded. The Aterminals of these contacts are connectedby the, wires 146 and 147 with the terminal 148 of the magnet G and theterminal 128A on the bus bar '109, respectively. From a terminal 149 `ofthe magnet H a wire 150 extends to a terminal 123a having the contact12.4, hereinbefore mentioned, associatedwith thebellows 495,.

may be such that'its contact bridging element is in engagement witlitlie contacts 11 and 12 before a synchronizing aperture 13 of the recordB is in registration With the i duct 14, in Wliichpevent the wind motorC must be speeded up: second, said contact bridging element 10 may comeinto engagement with the contacts 11 and 12 after a with the duct 14, inWhich case thetable A1 lowing course:

tact 11, bridging element 10, Contact 12,`

synchronizing aperture 13 of the recor has come into engagement with theduct 14, in which case the wind motor C must be slowed down; third, thecontact bridging element 10 may come into engagenientwith the contacts11 and 12 atthe same moment that a synchronizing" aperture 13 comes intoregistration and record B are traveling in synchronism and thesynchronizing mechanism shouldnot a reduction in the speed of the Windmotor.

Assuming now that the Contact bridging'l element 10 isin engagement.With the contacts 11 and 12 before a synchronizing aperture 13 comesinto registration with the duct 14, the circuit will be ,closed throughthe magnet D, said circuit traversing the fol- (see Fig. 2).: wire 100,conwire 101, magnet D, wire 104, contact 105, contact bridging element97, contact *106, wire 10T, terminal 108, bus bar 109, terminal 110 andwire 111. The magnet D being now energized, its armature d is attractedand the branch duct 57 and duct 60 leading to chamber 59 are opened tothe atmosphere. Chamber 59 being nonT in communication with theatmosphere the valve 72 is moved to open communication of chamber 69with the suction conduit 67 and close communication of said chamber 69with the atmosphere. Two results follow. to Wit:

(a) The chamber 77 ofI valve'boX L is placed under suction, whereuponthe valves 78 and 79 are moved to cut `off communication of port- 74with theichamber 7 3 and open communication of said port with theatmosphere through chamber 75, and hence the bellows 93 will now be incommunication with the atmosphere through duct 94, port 74 and chamber75, thereby assuring the maintenance of said bellows in its expandedcondition, it being understood that when the chamber 7 7 is not undersuction the valves 78 and 79 willi be held in the position shown in Fig.1 by the spring 81. i

(ZJ) The valves 87 and 88 of valve box M being in the position shown inFig. 1, bellows 95 will be collapsed by reason oits coinmunication withthe suction" conduit 67 afforded through duct96, port 83, chamber 82,

course: from the positive terminal of the vsource N to terminal 113 ofbus bar 114, by way of the wire 112, thence to terminal 140, thencebywire 139 to the terminal 141 on the bus bar 136, thence from terminal138 on said` bar, through the magnet H, and by wire 150 to terminal 123aand contact 124, thence through bridging element 98 to Contact 125,v

terminal 126, wire 127 to terminal '128 on bus bar 109, thence toterminal 110 and thenceby wire 111 to the negative terminal of thesqurce N.

The energizing of' the magnet H opens the duct 32 to the atmosphere andthis causes the 4valve 29;"to move and open the chamber 27 operate toeither bring about an increase or to the suction conduit 16, and as the'chamber 27"'is in communication with the suc tion conduit 25 it willfollow that additional suctional force will be introduced into Saidfollowing circuit vthroughl magnet E, to Wit: (see Fig. 3). v.

.From positive terminal of source N, by wire 112 to the terminal 113 onbus bar 114, lthence to .termina 115 on said bar, thence by wire 116 tocon act 117, contact 118 and. by wire 119 `to terninal 120, thencethrough magnet E, termina 121, 'wire 122 to terminal 123, to contact124, through bridgingelement 98, contact 125, wire 127, terminal 12S,bus bar 109. terminal 110 and wire 111 back to the negative terminal ofthe source.

The energizing of the magnet E causes itsv armature c to .be attractedand hence opens the branch duct 58 to the atmosphere. This duct 58 isconnected to the duct 60 which, as

we have already seen, was opened to the atmosphere when the armature Zof the mag, net D was attracted. The result is thatk no change in theconditioner the parts takes place and in fact the magnet H will not bedenergized until the magnet E` has been denergized: in other wordsmagnet D -will be denergized before magnet E because it was energizedrst,.but magnet H remains duct 60 having been closed, valve 72 will be imoved to cut ed communicationof chamber '69 with the suction conduit 67and open communication of said chamber with the atmosphere, whereuponair at atmospheric presf sure will be admitted to bellows 95 and thelatter expanded to break the circuit :to magnet H and to bridge the gapbetween the con tacts 144 and 145. at atmospheric pressure from thechamber 69 will be conducted by the duct 92 to chamber 77 of valve box Lthereby permitting spring 81 to act to adjust the valves 78 and 79 tothe positions in which they close the port 74 against the atmosphericchamber 75-and open it to the chamber 73. It will be noted that thischamber 7 3-is now in communication with the atmosphere through the port65, chamber 63 and branch duct 91a of the valve bonr J leading to theduct 91 so that the bellows 93 will remain expanded. The parts are nowin their original position ready for a new operation. If

the synchronizing hole 13 still comes into registration with its duct 14after'the cir- 'cuit through magnet D has been closed, the

'foregoing operation willbe repeated.

If, on the other hand, the synchronizingv aperture 13 comes intoregistration with its ductv14 before the circuit through the magnet Dhas been closed, that is, before the con? tacts 11 and 12 are bridgedby'the bridging element' 10, the operation rwill be as .follows Thecollapsing of the bellows 23 will close the circuitthrough magnet G,this circuit being as follows :-(see Fig. 4)' from positive terminal ofthe source N by the wire 112'to terminal 113thence over the bus bar 114to terminal 115, thence by wire 116 to vcontact 117, thence byA contactl18-and -wire 11,9 to terminal 120, thence through the thus placingchamber 54 of valve box J in communication with theatmosphere. This Atthe same time air i .causes the valve 66 in said box to move and 5 nowconducted by duct 96 to the bellows 95 lthe chamber .86.. of valve boxM. Hence open the chamber 63 to the suction conduit 61 and close itagainst the atmosphere. `Its chamber 63 is in communication with thechamber 73 of valve box L and also with valves 87 and 88 of. valve boxMlwill be moved to close port 83 against cliamber 32 and to open saidport to the atmospheric chamber 84: air at atmospheric pressure is andkeep the latter in its expanded condition` At the same time, the bellows93 being in communication with the chamber 73,

which is under suction, said bellows '93 will be collapsed thus movingContact bridging element 97 out of engagement. with con'- tacts 105 and.106 and causing it to bridge the contacts 129 and ,129B and 130,lwhereupon the circuit through the magnet l. will beclosed-cy thiscircuit traversing the following courv positive terminal of source N bywire 1,12 to terminal 113, bus bar 114 to termina-l 140, thence by wire139 to terminal 141 on bus bar 136, thence to terminal 137 throughmagnet I to terminal 135, thence by wire 134 to terminal 131L andcontact 129, thence through bridging element 97 to contact 130 andterminal 142 and by Wire '143 toterminal 108 on busl bar 109 andto"ter-A minal 110 on said bar and by wire 111 to the negative terminalof the source. LWhen the contact bridging element 10 on the tabley A f'is brought into engagement withA Athe coiv tacts 11 and 12 the circuitis closed through magnet F, this circuitltraversing wire 1,09,v contact11, bridging element/10, contact 12, ywire 101 to terminal 102, thencethrough magnet F and by way of wiref132 to the terminal131 and Contact129, bridging ele- -ment 97,v contact 130, terminal 142, wire 143,lterminal 108, bus bar 109, terminal 119 and wire 111 to the negativeterminall'ef the source.

Theienergizing of this magnet F opens the branch duct 52 to the duct 56and is' without effect until the branch duct 53 hasI been closedwhereupon it becomesA effective v to keep the chamber 54 open to theatmosphere and thus maintain thev parts in their former positions untilit,"namely the mag-y net F, has been denergized, or inl other wordsuntil both the synchronizing aperture 13 and the contact bridgingelement 10 yhave passed out of operative relation with the duct 14 andcontacts 11 and 12, respectively.`

YVhen the synchronizing aperture: 13 comes into registration with theduct 14 at the same' moment that the contact bridging element-10 comesinto engagement with the contacts 11 and 12, ymagnets D and G will, as fis apparent,be energized at thevsameftime. This will 'result .in thesimultaneous movelie nient of the valve 72 inthe boXK andthe `valve 56in the box J, wherebychamber 85 will be placed undersucticn, through,duct

91, branch duct 91a, charnber'f and port 64 from chamber 61 and chamber77 will be placed under suction through" duct 92, branch diict 92a,chamber 69 and port 70, from chamber 67. This will result inlifting thevalves 7S, 79 .and 87, 88 simultaneously to thereby close the outletfrom chambers 73 and 82 through poits 74 and 83, respectively andprevent suction from passing to either bellows 93 or 95. In other wordsif the parts A and B complete their respective circuits exactlytogether, the synchronizing function of either of said parts isneutralized by the other and no change in the speed ofthe wind motorresults.

It has been stated in substance that when valve 721 is opened rst by theenergizing oi'i' the motor D first, it is maintained in such openposition as long as motor E. is encrgized or, in other words, -it ismaintained in such open position until the contact bridging element l0passes out of engagement with contacts l1 and l2 and the synchronizingaperture 13 has passed out' of registra' tion with the duct 14: and,similarly that when valve 66 has been opened by theenergizing of motor Git will continue open until motor F has been denergized. Thisexplanation is founded upon the supposition that the motor which hasbeen energized first will be denergized lirst. This, however, may notalwaysbe true,as it is possible, iii the operation of theapp`aratus,that the motor which has been energized first will bedenergized at ythe same time as or' later than the motor which has beenenergized second. Ir it is denergized ahead of the companion motor whichwas energized after it was energized, then the valve 66 or 72,associated with said motor, obviously willbe-niaintained in its openposition until the motor which operated to open it has been denergized.In other words, the parts are so cordinated that either valve willremain in open position as long as either motor associated therewith isenergizedl It of course will' be understood that the records areprepared with reference to each other and when one of the records is aphonograph record it should have means of some appropriate nature forindicating or deter-r mining the position in which it is laid upon thephonograph table. Again it will be 1inderstood that both instrumentsshould be started at the same time and at the same speed. lVhen one ofthe instruments to be synchronized is a phonograph it will be desirable,though not essential, to provide means whereby the table will bestarted-at the full speed or will quickly attain such fulll speed.y For4the latter purpose it may 'be given an additional starting impulse byhand or by mechanism, which ever is pre- 'erredl Having now describedthe invention and set forth in detail the preferred embodiment "anddecrease of the speed of the motor, said connections including lmeansfor causing that moving part-which is traveling in advance of the otherto first affect the motor to increase or decrease its speed and theother of said moving parts to continue said effect upon the motorthroughout the period of operation of the latter moving part if thetiret-named moving part ceases to exert its effect.

2. Mechanism for synchronizing the operations of moving partscomprising, in coin- A bination, a motor for one of the parts, valves,means whereby movement of thc valves eii'ects an increase or decrease ofthe speed of the motor respectively, motors for said valves,respectively, and periodically l operative connections between the valvemotors and the parts to be synchronized, said connectrens includingmeans operating in accord with the moving parts for causing that ypartwhich is traveling iii advancel of thepther to first set in operationits related `valve motor and the other of the moving parts to act t'ocontinue the operation of said valve motor' if the first named partceases to'exert its eilect.

3. Mechanism for synchronizingr the operations of moving'partscomprising, in coinbination, a motor for one of the parts, pneumaticallyoperable valves, means whereby movement of the valves effects anincrease or decrease of the speed of the motor, respectively, electricmotors for controlling the pneumatically operable valves periodicallyoperative connections between the said electric motors and the parts tobe synchronized, said connections including means operating in accordwith the moving parts respectively, for causing that moving part whichis traveling-iii advance of the other to first set in operation itsrelated electric niotor and the other of the moving parts to act .tocontinue the operation of the said electric motor if the first namedexert its effect thereon.

- 4. Mechanism for synchronizing the operations of moving artscomprising, in combination, a motor For one of the parts, pneumaticallyoperable valves, means whereby part ceases to i io mooiere movement ofthe valves etl'iects an increase or decrease of the speed ot the motor,re-

spectively, electric motors tor controlling said valves, electriccircuits between the electric motors and the parts to be synchronizeth'means for periodically completing' said circuits under the action ottliesaid parts rcspectively, and means in said circuits for causing thatmoving part which is traveling' in advance ot' the other to complete oneot said circuits to set one of the electric motors in operation and theother ot' the moving parts to then complete a circuit to continue theoperation ot' said motor, it the circuit made by the first named moving'part is broken. v

5. ll'echanism for s),f'nchroni zing the operations ot moving' partscomprising', in combination, a motor tor one of the parts, valves, meanswhereby movement otthe.

valves etliects an increase or decrease or thev speed ot the motor,respectively. electric motors tor controlling said `valves, a circuittor each ol: said motors, a circuit making' and breaking' element ineach ot said circuits, and periodically operative connections foroperating the circuit making and breaking elements under control ofthe'parts to be synchronized, respectively said connections includinglmeans whereby during the time that one of the said making and breakingelements is actuated toclose the. circuit to one of the, electric motorsthe other o'l sai-4l lcircuit making' Vand breaking' elements is causedto break the circuit to the other ol' said motors.

t3. Mechanism tor syncln'onizing the open ations ot moving' partscmuprisingr1 in combination. a motor for one nl the parts. valves, meanswhereby movement ot the valves effects an increase or decrease of thespeed ot the motor respectively, motors tor said Valves.y respectively.and periodically operative connections between the valve motors and theparts to be syncln'onizcd. said con nections including means wherebythat moyingr part which is traveling' in adyanceot the other will firstset in operation its related valve motor and the other of the moving'parts will actto continue the operation ot said valve. motor after thefirst named part. ceases tolexert its effect 'upon said valve motor,said connections further including; means whereby when one ot the valvemotors is set in operation. the connections are rendered inoperativewith respect to the other of the Valve motors.

7. Mechanism for synchronizing the operations ot moving partscomprising, in combination, a motfor for one of the parts, valves,

means wherebyy movement ofthe valves et- "fects an increase or decreaseof the speed o' the motor respectively, means for actuating the valves,electric motors for controlling 65 said actuating means, a circuit foreach of Said motors, a circuit making' and breaking element in each ofsaid circuits and periodi! cally. operatire connections for operating'the circuit makingr and breaking: elements under control of the parts tobe synchronized respectively, said connections including' means wherebyduring' the time that one of,

the said making` and breaking elements is' actuated to close the.circuit to one ot the electric motors the other of said circuit mak ing'and breakingl elements is caused to break the circuit to the other ofsaid motors, Said connections also including?r means wherebythatiiioving part whiclris traveling in ad- Vance ot the other willfirst act to complete the circuit to one of the motors andthe other otthe moving' parts will act to maintain the completion ol said circuit itthe first named part ceases to exert an eti'ect thereon.

8. llechanism for synchronizing 'the operations of moving' partscomprising. in combination, a driving' motor for one-.of the parts, aplurality ot electric motorsI` means between the electric motors and thedri Vina' motor whereby the energizing' ot' the electric motors effectsan increase or decrease ot" the speed ot the driving` motonrespectively. and means for energizing said motors. comprising' aneleci'ic circuit :tor each motor` circuit making' and breaking' elementtor each ol said circuits. electric circuits periodically closed by thea't'oresaid moving' parts respcctively. a nd connections betweui thelast named circuits and thc circuit making and breal'ine' elenient`respectively, said connectio s including' a series of motors arranged inpairs. one motor ot' each pair beine in one circuit and the other motorof each pair being' in the other circuit. whereby one motor of eitherpair when energized will ell'ect the operation ot its associatedcircuitnnlkincY and breaking' element and the other motor ot' the samepair may continue such effect after the tirst-nan'ied motor has been'electric circuits periodically.closed by the aforesaid moving' partsrespectirely valvular means for operating the circuit making andbreaking' elements respectively. and means for controlling the.operation of the valvular means under control o the lastnamed circuits,the controllingnieans inclading a. series .of electric motors, arrangedin M est@ pairs. one motor of each pair being in one circuit and theother motor of each pair being in the other circuit, and connectionsbetween said pairs of motors and the valvular means resiiiectively.

10. lilechanism tor synchronizing the operations of moving parts,comprising in Combination, a motor tor one of said parts and means foret'fecting an increase or decrease ot the etlective strength of theforces exerted upon the motor, said means including pnem'naticallyoperable circuit making and breaking devices, valves for controlling thepneumatic forces by which said devices are actuated, ducts, the openingot which causes the actuation of said valves, a plurality ot'controlling devices for each of the ducts and means for operating saidcontrolling devices successively under control ot' the moving partsrespectively.

il. Mechanism for synchronizing the op` erations ot' moving parts,comprisinfr, in cmnbination, a motor tor one ot' said parts and meansfor effect-ing an increase or decrease ot' the eti'ective Strength ofthe forces exerted upon the motor, said means including pneunniticallyoperable circuit making and breaking devices, valves for controlling theymcmn'atie forces by which said devices are actuated, ducts, the openingof which causes the actuation ot said valves, a plurality of branchesfor each duct, an electrical controlling device for each of the ductsand means foroperating said controlling devices successively undercontrol ot' the moving parts respectively.

12. lilechanism for synchronizing the operations of moving parts,comprising in combination. a motor for one of* said parts and means foreffecting an increase or decrease of theeliiective strength of theforces exerted upon the motor, said n'ieans including pneumatically opeable circuit making and breaking' devices and connections between saiddevices and the motor, primary valves` controlling the pneumatic forcesby which said devices are actuated, additional valves which' when in oneposition permit the passage ot' pneumatic forces of one strength to thesaid devices and when in thc other position permit. the. passage ofpneumatic force.-,1 of another strength to the said devices, actuatingmeans for each o't` the additional valves, ducts controlled respectivelyby the said additional valves and connnunicat-ing respectively with theactuating means of the other ot' said additional valves, chambers inwhich the primary` valves are `ocated, and connections between saidchambers and the ducts respectively.

13.. lvlecliaiiisn1 for synchronizing' the operations olvmovmg parts,comprising in combination. .a motor t'or one of said parts and means foreffecting an increase, or decrease of' the effective strength of theforces exerted upon .the motor, said means including pneumaticallyoperable circuit making and breaking devices and connections b'etweensaid devices and the motor, primary valves for controlling the pneumaticforces by which said devices are actuated, additional valves which wheninone position permit the passage ot pneumatic forces of one strength tothe said devices and when in the other position permit the passage ofpneumatic forces ot' another strength to the said devices, actuatingmeans for each of the additional valves, ducts controlled respectivelyby the said additional valves and communicating respectively with theactuating,r means of the other ot said additional valves, chambers inwhich the primary valves are located, connections between said chambersand the ducts, respectively, and a plurality of controlling means foreach ot' the primary valves, said latter means being operablesuccessively under control ot the moving parts respectively.

14. Mechanism for synchronizing the operations of moving parts,comprising in combination, a pneumatically controlled motor for one ot'said parts, valves controlling' the pneumatic forces to increase ordecrease the speed of the motor respectively, electric membersrespectively controlling said valves, an electric circuit for each ofsaid members, a pneumaticallyoperable circuit making and breaking deviceincluded' in each of the cireuits,. valves and connections between saidvvalves and the pneumatically operable circuit making and breakingdevices whereby said devices are controlled respectively by said valves,a plurality of electric motors controlling the movement of' each of saidvalves, circuit'closing means operable periodically under control of themoving parts, respectively, and a plurality of electric circuits inwhich the circuit closing means, the electric motors and the circuitmaking and breaking devices are included, the electrical connectionsbeing so arranged,'tbat when one of the circuit closing means isactuated in advance of the other, a. circuit is completed through oneot' the velectric motors with which it is associated to move the valvethat is controlled thereby and also closes the circuits in which theother electrical. motor is included whereby when the other circuitclosing means is moved', said electric motor is energized to continuethe actuation of said valve and to therebyv continue the pneumaticoperation otsa-id circuit making and breaking devices.

l5. Mechanism for synchronizing the operations of moving parts,comprising, in combination, a driving motor for one of the parts, a plu'ality of electric motors, means lbetween the electric motors and thedriving motors whereby the energizing of the electric motors effects anincrease or decrease of nesecito the-speed of the driving motor,respectively7 and means for energizing said motors, comprising anelectric circuit for each motor, a circuit making and'breaking elementfor each of said circuits, connections through which the movements ofthe circuit making and breaking; devices are respectively eected, valvesin said connections, a plurality of controlling motors arranged inpairs, each pair controlling one of said valves, a 'pair of primaryelectric circuits and circuit closing means therein, said circuitclosing means being actuated under control of the moving partsrespective y, one or the motors of each pair being included in therespective primary circuits and circuits controlled by the circuitmaking and breaking elei'nents and-in which circuitssaid motors areincluded, the connections for said circuits being so arranged that whenone of the primary circuits is closed in advance of the other one olithe controlling` motors of a pair will be energized to cause theactuation of its associated 'valve and when the other primary circuit islater closed the other controlling motor of that pair will act tocontinue such actuation of the valve.

3.6. Mechanism for synchronizing the op-v erations of moving parts,comprising, in combination, a motor for one of said parts, and means foreffecting an increase or de crease of the effective strength of theforces exerted upon the motor, said means including pneuinaticallyoperable circuit making and breaking devices7 valves, and connectionsbetween said valves and the pneumatically operable circuit marking andbreaking device, said valves controlling the pneumatic forces by whichVsaid devices are actuated, a plurality 0f electric mot-ors forcontrolling the movement of each of said valves, means forenergizingsaid motor successively un der control of the moving parts,respectively, and connections between the valves whereby when saidvalves are simultaneously opened they each act to cut oil communicationbevtween the other and the penumatic circuit making and breaking devicecontrolled by the latter.

17. Mechanism for synchronizing the opT erations of moving parts,Comprising, in combination, a motor for one of said parts, valves, meanswhereby the movement of the valves ell'ects an increase or decrease ofthe speed of the motor respectively, electric members respectivelycontrolling said valves, an electric circuit for each of said members, apneumatically operable circuit making and breaking device included ineach of the circuits, valves and connections between said valves and thepneumatically operable circuit making and breaking,r device whereby saiddevices are controlled respectively, by said valves, a plurality ofelectric motors controlling the movement of each of said valves, circuitclosing;n means operi-ibis riodically under the control of the movingparts, respectively, and a plurality of electric circuits in whichthecircuit closing` means, the electric motors and the circuit. making andbreaking devices are' included, the electrical connections being,n soarranged, however, that when one of the circuit' cios ing means is'actuated in advance ol the other a circuit is completed through. oneoli the electric .motors with which, it is asso ciated to move the valvethat is controlled thereby and also closes the circuit in which theother electrical motos is included whereby when the other circuitclosing means is moved, said electric niotor is cnerg'iscd to continuethe actuation oiisaid valve to thereby continue 'the pneumatic operationof said circuit making; and hrcnking,v cleric-es, and connectionsbetween the valves whereby when said valves are simultaneously openedthey each act to cut oil communicetion lie-- tween the other valve andthe pneumatic circuit making and breaking device controlled by thelatter.

1S. Mechanism for synchronizing the operations of moving parts,comprising, in combination, a motor for one ci said parte, and means torellecting an increase or do crease of the ellective strength of theforces exerted upon the motor, said means include' ing pneumaticallyoperable circuit multi; r and breaking; devices, valves, and connectionsbetween said valves and the pneumatically operable circuit mal-zing; andbreaking devices, said valves controlling the pneumatic forces by whichsaid devices are actuated, a

plurality of electric motors for controlling i the movement of each ofsaid valves, circuit closing means operable periodically luider thecontrol ot' the moving parts respectively, and a plurality ol electriccircuitsin which the circuit closing means, the electric motors andthecircuit making` und breaking devices are included, the electricalconnections being; so arranged, however, that when one of the circuitclosing means is actuated in advance or the other a circuit iscomplet-ed through, one of the electric motors with which it isassociated to move the valve that is controlled thereby and also closesthe circuit in which .the other electric motor is included whereby whenthe other circuit closing means is moved said electric motor is enerugized to continue the actuation of said valve and to thereby continuethe pneumatic op eration of seid circuit makingF and breaking;A devices,and connections between the valves whereby when said vulves aresimultaneously opened they each act to cut oil cominunication betweenthe other and the pneumatic circuit making and breaking device con`trolled by the latter.

Mechanism for synchronizing the opw ige erations ofmoving parts,comprising in f with which the ducts are respectively brought intocommunication when the said valves are in their other positions,actuating members to which the additional valves are secured, a pair ofadditional ducts, each of the latter ducts establishing communicationbetween one of the primary valves, the actuating member of one of theadditional valves, and the controlling chamber of the other additionalvalve, suction chambers, means for establishing communication betweenthe suction chambers and Controlling chambers when the primary valvesare opened', actuatingl members for the primary valves, ducts throughwhich said primary valves are controlled, a plurality of control- ,lingmembers for each of'said ducts and means for actuating said controllingmembers successively under control of the moving parts respectively.

I n testimony whereof I affix my signature.

HEINRICH BOCKISCH.

